Someone I have never met, communicated with, or even heard of has just sent me a LinkedIn invitation:

XYX has indicated you are a Friend: Since you are a person I trust, I wanted to invite you to join my network on LinkedIn.
I guess he must just have a very positive view of mankind... It reminds me of Zaphod Beeblebrox:
"Who are you?" "A friend!" Shouted back the man. He ran toward Zaphod. "Oh yeah?" said Zaphod. "Anyone's friend in particular, or just generally well-disposed to people?"
Douglas Adams was a true visionary...